Obviously no one can give you an iron clad promise that you will be able to breast feed but generally inverted/flat nipples don't stop a baby from breastfeeding (clue - it's called breast not nipple feeding ).
I had one inverted nipple. It stayed that way through feeding my son, now 6. This time through feeding it's popped out and stayed that way. You wont know till you try but in most cases it's definitely possible.
Mine are flat and I used to squidge them into a sort of point then post them in dd's mouth. It did mean she got a proper mouthful of breast and I never got sore, which might be luck but it worked for us. However we never managed to crack it without me holding my breast, even at 4mo I still needed to do it which made it a PITA when we were out and about. But the early days were fine.